Data-Driven Edge Offloading for Wireless Control Systems

Yehan Ma, Cailian Chen, Shen Zeng, Xinping Guan, Chenyang Lu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

As industrial plants embrace modern technologies, such as edge computing and wireless networks, industrial control systems have evolved into multitier cyber-physical systems. While traditional local controllers enjoy reliable connectivity to sensors/actuators, they suffer from the limited computation capacity of embedded devices. In contrast, edge servers introduce more computation resources connected to sensors/actuators through wireless networks. Offloading control functions to edge servers presents new opportunities to enhance control performance but also poses critical challenges. As wireless networks have limited bandwidth and varying reliability, it is important to optimize control performance by dynamically offloading a subset of the control functions to edge servers under the bandwidth constraint. Furthermore, the selection of offloaded control functions depends on both the cyber (wireless) and physical states of the wireless control systems. In this article, we tackle the problem of optimizing the control performance of multiple control loops through dynamic edge offloading. We establish a data-driven model to predict the control performance of each feedback control loop based on its cyber-physical states. We then develop a dynamic edge offloading approach to optimize the overall control performance of a system with multiple feedback control loops while guaranteeing their stability under fluctuating cyber-physical conditions. Finally, we demonstrate the efficacy of the data-driven model and offloading approach in case studies comprising simulations of up to 20 industrial robots.

Original languageEnglish
Pages (from-to)10802-10816
Number of pages15
JournalIEEE Internet of Things Journal
Volume10
Issue number12
DOIs
StatePublished - Jun 15 2023

Keywords

  • Cyber-physical systems
  • edge offloading
  • wireless control systems (WCSs)

Fingerprint

Dive into the research topics of 'Data-Driven Edge Offloading for Wireless Control Systems'. Together they form a unique fingerprint.

Cite this